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Investigation of the formation characteristics of polyaniline and its application in forming free-standing pressure filtration membranes

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Abstract

PANI particles were synthesised through the chemical polymerisation of an ammonium persulfate (APS) and aniline (ANI) solution with/without lithium chloride (LiCl) at different reaction times (6–24 h) and temperatures (3–24 °C). SEM images, along with GPC results, confirmed that PANI synthesised at different parameters affects the PANI morphology and molecular weight (MW). Meanwhile, TGA and DSC results represent the thermal properties of synthesised PANI and reveal that PANI without LiCl addition has the lowest melting temperature. Based on the results, the best PANI was successfully synthesised at a temperature of 3 °C and at a reaction time of 6 h with the addition of LiCl. A free-standing PANI membrane was obtained through phase inversion upon using PANI in NMP/4MP of 18, 20, and 23 wt%. A rejection study showed that the free-standing PANI membrane with 23 wt% concentration was in nanofiltration (NF), whereas others were in the ultrafiltration (UF) range.

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Acknowledgments

The authors would like to acknowledge the financial support of the Fundamental Research Grant Scheme (FRGS/2/2013/TK05/UKM/02/4), GGPM-074-2013(UKM), Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia and MyMaster by MOSTI for the MSc scholarship.

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  1. Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM, 43600, Bangi, Selangor, Malaysia

    Izzati Izni Yusoff, Rosiah Rohani & Abdul Wahab Mohammad

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  1. Izzati Izni Yusoff
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  2. Rosiah Rohani
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  3. Abdul Wahab Mohammad
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Correspondence to Rosiah Rohani.

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Yusoff, I.I., Rohani, R. & Mohammad, A.W. Investigation of the formation characteristics of polyaniline and its application in forming free-standing pressure filtration membranes. J Polym Res 23, 177 (2016). https://doi.org/10.1007/s10965-016-1068-4

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